With GM hotshoe Jan Magnussen in the cockpit of
Zee Really fast One »10/28/08 5:40pm 10/28/08 5:40pm, the General's hypercar trimmed a staggering four seconds off its previous record-breaking lap time, bringing in a 7:22.4 lap around the 13-mile circuit. Although blisteringly quick, the ZR1's new time still falls short of the Viper ACR's best time of…

Talking to
Corvette ZR1 »8/21/08 10:40am 8/21/08 10:40am engineer Jim Mero during our of the car at GM's proving grounds, we asked him about his . He told us if you inspect , you can see he probably could have shaved at least half a second off the 7:26.4 lap time if he had just taken a few of the turns better. Then, just to prove the point, Mero…